At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. What is the probability that a randomly selected student studies for a test and gets a B or higher?

0.08
0.11
0.33
0.55

Answer: B

Step-by-step explanation:

13.14760878

Answer:

A = 39 m²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Identify Variables

Shorter Diagonal d2 = 3m + 3m = 6m

Longer Diagonal d1 = 9m + 4m = 13m

Step 2: Find Area

Answer: Its b i took that

Step-by-step explanation:

Trust me

Answer:

A

Step-by-step explanation:

c = 15n

9514 1404 393

Answer:

  x = 6

Step-by-step explanation:

The parallel lines divide the sides proportionally. So, we can write the equation ...

  x/4 = (x +3)/6

  3x = 2(x +3) . . . . . multiply by 12

  x = 6 . . . . . . . . . . . subtract 2x

Answer:

I got you

Step-by-step explanation:

6.05-12.50=13.55

48 divided by 13.55=3.542

x=3.542

Answer:

X= 1

Step-by-step explanation:

6.05x-12.5=48 Add 12.5 to both side

         +12.5 +12.5

6.05x = 60.5 now divide both sides by 6.05

/ 6.05    /60.5

X     =  1

The equations that are correctly written in standard form are

A. 3/7x + 2y =9

C. 5x – 4y = 9

D. -3x + 7y = 12

From the question, we are to determine which of the given equations are written in standard form

The standard form of a linear equation is Ax + By = C.

Where A, B, and C are constants,

and

x and y are variables

Hence, the equations that are correctly written in standard form are

A. 3/7x + 2y =9

C. 5x – 4y = 9

D. -3x + 7y = 12

Learn more on Standard form of a Linear equations here: https://brainly.com/question/1293412

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Answer:

B: u = (1,5) and v = (-5,1)

Step-by-step explanation:

edge 2021

The pair of vectors which are orthogonal to each other will be u = ⟨1, 5⟩ and v = ⟨–5, 1⟩. Then the correct option is B.

The quantity which has magnitude, direction and follows the law of vector addition is called a vector.

For the orthogonal vector, the dot product of two vectors will be zero.

Check first option, we have

u·v = ⟨–3, 2⟩·⟨–2, 1⟩

u·v = 6 + 2 = 8 (incorrect)

Check second option, we have

u·v = ⟨1, 5⟩·⟨–5, 1⟩

u·v = –5 + 5 = 0 (correct)

Check third option, we have

u·v = ⟨2, 1⟩·⟨–4, 3⟩

u·v = –8 + 3 = –5 (incorrect)

Check fourth option, we have

u·v = ⟨2, 3⟩·⟨3, 1⟩

u·v = 6 + 3 = 9 (incorrect)

Then the correct option is B.

More about the vector link is given below.

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Answer:

the answer is 4

Step-by-step explanation:

Answer:

60%

Step-by-step explanation:

39/65 gives you the answer.

Answer:

4.5454545454545454. . .

Step-by-step explanation:

Original equation:

2500 + 110h < 3000

Subtract 2500 from both sides

110h < 500

Divide both sides by 110

h < 4.5 (rounded to the nearest tenth)

Hope this helps :)

Please consider Brainliest :)

Answer:

No because they are not proportanial

have a great day you are loved and you matter

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

divide both sides by 2

Answer:

154,100

Step-by-step explanation:

the tenth is the 0

5 or more up the score 4 or less let it rest.

Answer:

P(A∩B) = 0.12

Step-by-step explanation:

Given:

Students receive financial aid P(A) = 40% = 0.4

Students receive financial aid and first generation P(B/A) = 30% = 0.3

Find:

Probability [Selected student receives financial aid and is first generation college student] P(A∩B)

Computation:

P(A∩B) = P(A) x P(B/A)

P(A∩B) = 0.4 x 0.3

P(A∩B) = 0.12

Answer:

-2(-3n - 12)

Step-by-step explanation:

Answer:

570 grams of water

Step-by-step explanation:

171 divided by 6 = 28.5

28.5 grams are in 1 ounce

so Multiply 28.5 by 20 to get the new amout which is 570

The amount of water present in 20 ounces of grapefruit juice will be 570 grams.

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

A 6-ounce serving of grapefruit juice contains 171 grams of water.

The ratio of the amount of grapefruit and water present will remain constant.

Let 'x' be the amount of water present. Then the equation is given as,

x / 20 = 171 / 6

x = 20 · 171 / 6

x = 570 grams

The amount of water present in 20 ounces of grapefruit juice will be 570 grams.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

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Answer:

its C

Step-by-step explanation:

Answer:

C. The graph has y-intercept - 2, not initial value - 2.

Step-by-step explanation:

Hope this helps

Answer:

70

Step-by-step explanation:

Least common multiple (LCM) of 5 and 14 is 70.

Nope, I don't. LOL, if you don't agree with me, please don't start the fifth shinobi war. Also, may I ask how it's relates to a school assignment? LOLOL

Answer:

Yes and no

Step-by-step explanation:

I say yes and no because I think that their relationship throughout the show could spread to a romance rather than a bromance. I love this ship, although I do also love the cannon ships. Hinata x Naruto and Sakura x Sasuke. And I know a lot of people hate Sasuke and Sakura ship but you know that song that goes, "I hate everything about you! Why do I love you?!?" That is what I think of that ship and I love it.

Now I'm ranting lol. But yeah that is my opinion on Naruto x Sasuke! <3

Answer:

k = 23% profit on sale price is needed to ensure 30% profit on cost price

Step-by-step explanation:

Let sale price be = s , Profit = k% of s

Let cost price be = 100 , Profit = 30% of c

Cost price (c) + profit (p)  = Sale price (s)

c + 0.3c = s

1.3c = s

Profit as a percentage of sale = (Profit / Sale) x 100

= (0.3c / 1.3c) x 100

= 23%

Answer:

no

Step-by-step explanation:

i copied the person above me :)

sorryyy not sorry lol

#respectfully

Answer:

give them all a common denominator

1/3= 2/6

5/6= 5/6

1/2= 3/6

1/6= 1/6

and then use the "new" fraction to order the other ones. but be sure to use the original values, not the ones you made using the GCF. so the answer would be:

1/6, 1/3, 1/2, 5/6

Answer:12B - 12M = 36

12B + 15M = 63

Subtract one from the other:

12B + 15M = 63

-(12B - 12M = 36

-------------------------

0 + 27M = 27

27M = 27

M = 1

B - M = 3 (from the original equations)

B - 1 = 3

B = 4

You bought 4 books and 1 movie.

Step-by-step explanation:

Answer:you buy 4 books and 1 movie

Step-by-step explanation:

12x4=48 + 15(one movie)=63

:D

Answer: 20% increase

Step-by-step explanation:

Answer:

C. 20% increase

Step-by-step explanation:

if it was decreasing it would be less and 20% is even and seven is also even

Answer: Following the rules of PEMDAS, you want to divide both sides of the equation by -2. This would change your equation to x+3=5. Then you move your constant to the right-hand side and change its sign. Your equation is now x=5-3. subtract 5-3 and your answer is x=2.

Answer:

Step 1 Divide all terms by a (the coefficient of x2).

Step 2 Move the number term (c/a) to the right side of the equation.

Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.

hope this help

but this is little info dont worry i will answer your question just in a minute

Step-by-step explanation:

Answer:

D: 14.5

Step-by-step explanation:

4.1 = d - 10.4    add 10.4 to each side

14.5 = d

Answer:

14.5

Step-by-step explanation:

10.4 - 4.1 = 14.5